What are the pros and cons of Armor branch and MI branch in the National Guard for officers?

Armor: combat arms. Intel: combat support.
Armor: fast moving, action oriented, hands on. Intel: thoughtful, report oriented, theoretical
Armor: officers command formations of troops to carry out orders. Intel: officers manage collection and analysis to advise those who write the orders.

Just my perception as a former DAC.

As a LT Combat Arms gives you a firm foundation to build your military career of service. Just because you might start out Guard doesn’t mean you can’t transfer to the Reserve side. Once on the Reserve side with the MIRC Military Intelligence Readiness Command you’ll have plenty of opportunity to make Up to Full Colonel provided you get your schooling accomplished on time or early and hit the jobs you need to get while taking care of your Soldiers along the way. I made it to LTC after starting as a FA officer, qualifying in OD Maintenance then finally getting the opportunity in the Logistics Branch to make LTC. Best of luck CDT Haidar

MI: Skills that transition neatly to a civilian occupation.
Armor: Not so much. A waste of time.

If you're going to be in civilian attire 28 days out of the month, you might as well choose a field that will help on the civilian side.